Solution: Valid Palindrome
Explore how to identify valid palindromes in a string using the two pointer technique. This lesson guides you to handle case insensitivity, skip non-alphanumeric characters, and achieve an O(n) time and O(1) space complexity solution. Understand the steps to implement a clean, efficient palindrome check.
Statement
Given a string, s, return TRUE if it is a palindrome; otherwise, return FALSE.
A phrase is considered a palindrome if it reads the same backward as forward after converting all uppercase letters to lowercase and removing any characters that are not letters or numbers. Only alphanumeric characters (letters and digits) are taken into account.
Constraints:
s.length...